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几个国家的研究表明,将同样的养分施于叶片上要比施入土壤中对增加籽粒产量更为有利,特别是在盐碱条件下和对尿素的使用尤其如此。本试验的目的在亍比较不同氮素施用方式对小麦生长和产量的影响。材料和方法本试验于1974—75年和1975—76年,在Abu Ghraib试验研究站的灌溉条件下进行。玉米收后,小麦品种Mexipak以30cm的行距条播,播种量为100公斤/公顷。两年的试验均在相同面积的地块上进行。共七个处理:(1)40公斤氮/公顷(土施);(2)80公
Studies in several countries have shown that applying the same nutrients to the leaves is more advantageous than increasing the yield of grain, especially in saline-alkali conditions and especially for the use of urea. The purpose of this experiment is to compare the effects of different N application modes on wheat growth and yield. Materials and Methods This experiment was conducted in 1974-75 and 1975-76 under irrigation conditions at the Abu Ghraib Pilot Station. After harvest of the maize, the wheat variety Mexipak was sown at a spacing of 30 cm with a seeding rate of 100 kg / ha. Two years of testing were conducted on plots of the same area. A total of seven treatment: (1) 40 kg nitrogen / ha (soil facilities); (2) 80 km